Transformer Information

The Z4000 provides 10 amps to each handle, as well as a pair of 4 amp outputs at 14 volts and 10 volts, respectively.

urreng,

   The Z4k is a good Transformer, I also have a couple ZW's & a couple KW's. The trick is to go to the train shows in your area, many times the vendors rebuild the older ZW & KW transformers and sell them at very reasonable costs.  The Z4K is going to cost ya, same with the new ZW-L, shop around and get the best deal you can if you are going with the new stuff.

PCRR/Dave

urrengr

The 180 watt[10 amp] Lionel PowerHouse will supply 180 watts or 10 amps to a single power district or Channel.

If you only need to power one command control channel on your TIU then, as Dewey Trogdon stated, the Lionel Powerhouse 180 would be a very good item for that purpose. Should be able to get a new one for $80-$90 or so street price. Problem is they are kind of scarce right now. If you need future expansion capability and/or accessory power then further consideration of the Z-4000 might be in order. 

You can also power more than one TIU input with a single PH180, you just won't have more than 180 watts total available.

urrengr,

   The main reason I like transformers over bricks is that you can vary the voltage with the transformer, not with a brick.  I used a channel of one of my old ZW's to power all my switches, upping the voltage as I added more and more switches, can't do that with a brick.  I know lots of guys like the bricks on this forum, I am not one of them, when I can pick up a good transformer for almost the same money.

PCRR/Dave